archived-shaders

[knotty juniper]

that because all mealtime engines use back face culling.
Either flit the faces in blender or make a new face facing the other way if you need both sides.
for the textures you need to make sure that you have popper uv maps sertup in blender

[sacred minnow]

Ok

I dont understand the textures bit

My uv maps are seemingly fine

In blendr

Hm

[knotty juniper]

what do you mean by
The textures go haywire
exactly?
can you show how it looks?

[sacred minnow]

Look at the img i sent

In blender, nothing is white

And its all one object using the same material

Its just one side going white

[knotty juniper]

then the textures did not come with the model or you did not assign them
how did you import the asset
as a blender file or FBX ?

[sacred minnow]

.blend

I downloaded the textures and applied them. Again, fine in blender

But not unity

[knotty juniper]

if i remember correctly only texture that are packed in the blend file will be imported with he model
let me make a quick test

[sacred minnow]

I unpackeed,them

[knotty juniper]

seems like importing it via a blend file will not copy over the texture
i works if you export it as a FBX
here is a guide for that
https://gamedevtraum.com/en/blender-tutorials-and-curiosities/how-to-export-a-3d-model-in-fbx-format-with-textures-in-blender/

[sacred minnow]

Thhx

[remote light]

Hey folks, thanks for all this - I'm on Australian time, so have just seen your responses now. Yes I think you're right I can use the Polybrush approach to paint vertex colors, then setup a shader with two colors. Sounds like that will suit my needs perfectly. Thanks for your help!

[grand jolt]

hello, what type of shaders do I need to create to work with URP? will unlit work fine for me?

[tame topaz]

That question doesn't really make sense.

URP comes with it's own built in set of shaders, which includes an unlit, no need to create one yourself.

[grand jolt]

i dont see the option for the simple_lit

[grand jolt]

how do i create the shader script instead of a graph?

its only giving me options for graps

[rocky plinth]

hey, i recently downloaded a shader for waves but it only works as necessary with their "big plane" and not the one that i can put into unity, any help?

[simple violet]

is it possible to make a shader that shows a 3D object with perspective inside of an orthographic camera

if i make a custom camera matrix

[grand jolt]

what i meant is that I want to create a .shader file type shader for lit surfaces

[simple violet]

standard surface type shader

but you can still use an unlit shader for lighting

[grand jolt]

im new to this, are you sure this will work?

[simple violet]

yea

[grand jolt]

i am using URP for the project

ok, ill try this out

no see, im trying to create a custom sprite-lit type. the unlit one isnt effected by lighting

[simple violet]

?

[grand jolt]

this is effected by lights

i want to create a custom shader just like this one. something from a simple template to change things around.

the only way to create a custom sprite-lit shader is thru a shader graph. I want to instead write out the shader myself

[simple violet]

u can't

[grand jolt]

so then the only way to make it work would be to copy the code from the .shader file and try to translate it to shader graph?

[grizzled bolt]

You can make a sprite-lit shader graph and modify the generated code

Much easier than going the other way

Or make a shader graph that uses custom functions

[toxic fable]

I'm trying to mask out objects from a custom post-process effect (URP render feature, blitting color texture with grayscale shader). I'm using stencil for the first time, so maybe I misunderstood the concept, but I already have setup a shader that renders objects I want to be masked out/excluded from the grayscale effect with this stencil block:

   Stencil
   {
     Ref 2
     Comp Always
     Pass Replace
   }```
And I added this block into the grayscale shader:

Stencil
{
Ref 2
Comp Less
}```

As far as I understand it, this should set 2 into the stencil buffer for each fragment of the object I want to be excluded from the grayscale effect, and then the grayscale shader should not execute for these fragments.

However, it doesn't seem to be working, the masked objects are also grayscaled. I'd like to know what should I look into, what could be the cause. Is the Stencil setup wrong or should I look into something else?

[sterile wave]

can i get scene color for certain camera in shadergraph, or do i need to write a shader/ use custom render feature/rendertexture?

[simple violet]

render texture would be easiest

[sterile wave]

i basically want to get the material color of objects above a certain height before rendering opaques. then make a part of the top layer mesh invisible so i can have different mesh shape but with the same texture (like a vertex displacement shader, but with another object. for example: hole in the ground) .

[sterile wave]

but this requires another camera -> slower performance

[simple violet]

not if you optimize it

[sterile wave]

what do you mean? how to optimize?

[simple violet]

make the camera use a low resolution

wont affect performance

[sterile wave]

via scripting?

[simple violet]

sure

[sterile wave]

but one problem could be: having the camera cover a large range could result in to low pixelcount. but i will try. thanks for youre help!

[sterile wave]

but how do i get the worldspace coordinates of the rendertexture so i only use the cutout of the rendertexture relating to the object position of which i want to put the rendertexture material? do i need raycast at the cameras border points? i cant define a camera in shadergraphs camera property-> its always the main camera

[simple violet]

what

it's just a texture

make a texture2d property and edit the rt in the shader

[sterile wave]

maybe this helps to understand my issue. thats a rendertexture from a camera thats a clone from my main camera

[sterile wave]

i want the mesh to look like a cutout from the rendertexture, i dont want to spread the complete texture over the object

[simple violet]

use the uv position

or vertex position

whichever works easier

[marble plover]

Hey, is it possible to deform mesh with a shader ?

like, i made a shader on blender and i want to try recreating the same in unity but i don't see something to deform the mesh directly from the shader

this is my blender animation, the center is just a sphere and i add multiple shader to make it moove like this

i just wanted to know if it's possible or not

[simple violet]

https://youtu.be/vh85pzT959M

[marble plover]

ty !

[full ravine]

Is there a cross product equivalent for 4d vectors?

[marble plover]

Ok so i have change the mesh of my sphere using shader but now i doesnt look like a sphere at all ? and i don't really know how do i change this

[marble plover]

what should i add the make it more like the second pic ?

[simple violet]

might need more vertices

[sacred minnow]

Any clue on how to make the background of this texture transparent? The png is transparent but the ingame texture isnt

Nvm

The material has to be set to transparent

[meager pelican]

Other processes (like lighting) may be using other bits, or even that same bit. So you should investigate the mask attribute (ReadMask WriteMask) to use a bit mask and figure out what bit to use in your stencil. Maybe also try comparison of Equal or NotEqual. I don't remember off the top of my head what bits are available for which pipelines.

[sacred minnow]

I cant figure out why the decal is not on the door on import. On blender it works fine...

[ionic smelt]

If it's a raw import, maybe it didn't import the materials properly. Have you tried making a new material and applying it to the object? If not, maybe show the settings from the Material. And the imported texture. Maybe the alpha isn't set up right.

[sacred minnow]

Everything else has imported properly except for this. The textures and material seem okay to me. If you want to see the blender materials, tell me

[ionic smelt]

All good. But wait, what pipeline is this? I see you've set a Standard Shader there for the material. I've only messed with URP.

And the built-in pipeline a while ago. Lemme check.

[sacred minnow]

Builtin

the default

but im planning to switch to HDRP once everything is set up

[ionic smelt]

Nice. Dumb question: Did you actually drop the material onto the plane? lol

[sacred minnow]

Yep

[ionic smelt]

Nice, alright. Well, what's weird is that even in the material preview it's still gray. Should be transparent with only the decal on it.

[sacred minnow]

There is another material

See the gray one?

[ionic smelt]

Oh, yeah, nevermind then. lol

[sacred minnow]

it works fine

its just the door decal

Oh

Its on the wrong side?

I set the top material to transparent

[ionic smelt]

Aha, lmao.

[sacred minnow]

the decal is INSIDE the door

hmm

[ionic smelt]

[sacred minnow]

Do i flip this in blender

[ionic smelt]

Well, I would've suggested to try out different shaders for the decal material but it's fine now. We know why it didn't work. lol

You could just flip the plane.

[sacred minnow]

?

Let me try flipping normals

[ionic smelt]

You could either flip the UVs, or adjust the rotation of the mesh in Unity or you could invert the texture quickly.

[sacred minnow]

Hmm

Flipping normals wouldnt work

[ionic smelt]

I think this might be the issue where blender has different axis than Unity. So sometimes stuff is flipped.

[sacred minnow]

It would make the door wierd

Crap

ik about that

[ionic smelt]

Yeah, flipping normals ain't it. It's the UVS you could scale on X to -1 in blender. Or as I've said, just use the rotation tool in unity and rotate the plane by 180 on Y.

[sacred minnow]

Its a cube though

Thats the problem

The decal is INSIDE the cube

[meager pelican]

Yes. In URP (assuming you're using that pipeline) you get the scene color with the scene color node. You have to activate the "grab texture" that happens between the opaque and transparent passes, and you'd use your shader in the TRANSPARENT queue, since it needs the opaque texture to have been grabbed, otherwise you'll just get grey.
Activate the grab for the camera in the camera's settings, or for all cameras in the render pipeline asset. If for some reason it doesn't work just activating it on the camera, you'd have to use the asset to activate it (IDK why that would be necessary, but...maybe you want that).

[ionic smelt]

I'd recommend next time you're in blender to make a new FBX exporter preset where the axis are set up properly so you don't need to deal with flipped meshes and stuff in Unity.

Alternate solution here: Put up your cube with the gray material and then add a plane with just the decal material on it.

[sacred minnow]

Hm

There has to be a better solution

[ionic smelt]

I personally I like to make decals just planes so I can swap them easily as well, plus rescaling works a lot easier.

[sacred minnow]

Cuz it works fine in blender

plus, if i wrap a decal next time, i cant use a plane

ill try

[sterile wave]

check your normals in blender and enable the normals direction view in edit mode

[sterile wave]

otherwise you can use probuilder in unity to flip normals

[sacred minnow]

How tf do you remove a material again 💀

[ionic smelt]

In blender, there's this:

Easy way to check normals directions.

[sacred minnow]

Where is it located

[sterile wave]

#archived-shaders message

[sacred minnow]

Oh

that setting

Yea but everything seems fine

God I hate unity's tomfoolery with normals

[sterile wave]

as i said: you can use probuilder to flip normals. unity has a normals view as well

[sacred minnow]

But flipping normals wouldn't work as I said

Because it would make the door look wierd

and inside out and stuff

I just want the material applied outside not in

[sterile wave]

then assign 2 materials in blender

[sacred minnow]

Wdym like this?

ah

nvm

i see

[sterile wave]

add another plane for the inside/outside, or extrude. then create a new material, assign it to the side and export

[sacred minnow]

I've applied it to the front and back of the mesh

[sterile wave]

https://www.youtube.com/watch?v=jckcF2ophY4

[sacred minnow]

Ik how to assign

[sterile wave]

i dont know what your problem is but it seems that you dont have created smart uv project for the other side of the mesh

[sacred minnow]

Hmm

I made a uv map for

it

I think that may actually be the solution

[meager pelican]

I think HDRP natively supports decals, you'd do well figuring that out in a test-project first, as you're spinning your wheels if you're not using HDRP's system from the start. 2-cents.

For URP, you can use something like this:
https://www.youtube.com/watch?v=f7iO9ernEmM

For HDRP see this:
https://learn.unity.com/tutorial/hdrp-decal-projector#

Again, just my 2 cents, and sorry for butting in, I may not have followed all this conversation.

[sacred minnow]

thx

[sacred minnow]

This worked thx

[sterile wave]

np

[marble plover]

hey, am i able to reduce the ammount of effect for this sphere ? my mesh is too deformed and idk what to do can i just reduce the noisescale ?

[quaint coyote]

Hey guys, I just tried painting some displacement map in photoshop and imported it into unity to try it out in the standard and tessellation shader respectively. Here's a short clip on how it looks:
https://youtu.be/f3nkGMoEs3A

[quaint coyote]

Howazattt?

[toxic fable]

After some investigation, the stencil seems to be working fine. If I place an object with shader writing to the stencil buffer and then place another object before it with the grayscale material, the desired effect is there - overlapping object is not rendering fragments that were masked out. However, I cant get the same result when applying this to a fullscreen effect. So I reckon I'm doing something wrong with the final rendering, as the stencil itself seems to be working

I'd say it has something to do with the usage of Blit in the renderer feature I'm using

[jolly oak]

i have a problem, i want to change the size of my outline but it isnt working at all. Like my outline isnt showing for some reason its in the model but cant get out

[simple violet]

is it possible to make a shader that shows a 3D object with perspective inside of an orthographic camera
if i make a custom camera matrix

[sacred minnow]

Anyone know why the metal of the door has such even and strange lighting compared to the decal?

Like, the cornel of that room will be almost pitch black but the door will still be alight

corner

as long as some light interacts with it

Is it to do with this?

[static ravine]

hello can someone tell me how to apply alpha masks on a shader? I am trying to apply it on my character model so the skin won't clip through the clothes.

[knotty juniper]

either prepare in the UV 1 propper uvs for lightmapping or enable the generate lightmap uv option in the models importer

[meager pelican]

Alpha masking/alpha clipping is done in the opaque queue, by setting the alpha value in shader graph to whatever the mask or alpha-channel value is, and then setting the clip threshold such that any value under that threshold causes the pixel to be clipped.
IDK what pipeline you're in, so if in hand-written BiRP you'd use the clip() function as in
clip(threshold - myAlpha);
but in Shader Graph there's a built-in process for that in the fragment stack. See graph settings, you have to enable alpha clip.

[brazen jacinth]

Hey, I just realized that the default Lit shader looks way better then my custom one from Shader Graph 😛 I have to use a custom one to implement some stuff for my game, but the "default" state should be the Default Lit URP Shader... is it normal that a custom one already looks different from that? And is there somewhere a Shader Graph Version of the default one to customize?

Example, Left one is the default lit shader, right one is mine (basicly just base color in this case with some specular)

Colors on both shaders are the same, so left (default) is doing definetly sth special.

[wraith inlet]

You can download the built in shaders from the download archive. I don't think they have shadergraph versions, but you can see the code. Maybe compare the generated code from your graph to their code to see what's different. https://unity3d.com/get-unity/download/archive

[brazen jacinth]

Found those already, and hoped there is a simpler / shader graph based answer for it 😛 Thought this is a general problem, since it sounds strange that basicly any object I want to do some custom shading on, will look significantly different from everything using default lit shader :/

[white marsh]

i didnt se anyone answer this, but yes. have some kind of variable that changes the amplitude

[wanton grove]

How do I use functions from one HLSL file (.hlsl) in another (.compute)? I've tried using #include but it doesn't seem to work.

[meager pelican]

How/where did you use it? Show code. What error message did you get?

[wanton grove]

Ok one sec

My Code:
WhiteNoise3D.hlsl

#include "NoiseUtils.hlsl"

void WhiteNoise3D_float(float3 input, out float Out)
{
    Out = rand3dTo1d(input);
}

TerrainGenerator.compute

#include "Subgraphs/Scripts/WhiteNoise3D.hlsl"
#pragma kernel Main

[numthreads(64,1,1)]
void Main(uint3 id : SV_DispatchThreadID)
{
  int i = 0;
  WhiteNoise3D_float(float3(1, 1, 1), out i);
}

My Error:

Could it be because I'm trying to use out?

I tried switching "i" to a float and it didn't fix it.

[shadow locust]

I think when you call the funciton you don't use out

only when you declare it

[wanton grove]

I'll try it

Wow it works lol, thanks

[shadow locust]

yeah that tripped me up the first time coming from C# to HLSL. since you need it in both places in C#

[meager pelican]

Well, the good news is that #include works.
He beat me to it! lol

[wanton grove]

I have another question aswell

This is from the Noise Utils file:

#ifndef _INCLUDE_NOISEUTILS_
#define _INCLUDE_NOISEUTILS_

I didn't make this code, I got it off github, what does ifndef and define mean? It seems to relate to include but I dont need that in any files I want to include right?

[meager pelican]

It stops it from being accidentally included twice, generating an error.

[wanton grove]

Oh ok, thanks

[meager pelican]

So if you accidentally include it twice, the 2nd (or 3rd...) time will be ignored.

[wanton grove]

ah, makes sense

that will be useful later on

[dawn lion]

does anyone know a good way to make a lit shader for smoke particles where you see the light from both sides (the light passing through the smoke)? or is there another option that achieves this?

[meager pelican]

It can be accomplished with (A) blended transparency to a point and/or (B) volumetrics (which is more complicated). Research things like volumetric fog or smoke. Hint: it's a lot like ray tracing/marching, through a volume and computing density and various lights going through it.

[dawn lion]

yeah, I really didn't want to do volumetrics because I have no idea how to do that stuff

can you clarify what you mean by blended transparency to a point?

[meager pelican]

Have you tried it with just stacking transparent objects? You'll see the limitations.
Also, beware of overdraw, it is a killer with tons of particles.

I had a situation where a projectile had smoke trials and came AT the player from afar. Stacked a poo load of particles on top of each other. Almost needless to say, but that approach was not a good way to do it.

I ended up doing something with various dithering levels instead.

[dawn lion]

well even with stacking transparent objects, they don't receive lighting from the other side

[meager pelican]

OK, so you want an actual LIGHT to impact the particles? Yeah, you'll need to at least iterate through the lights and compute something, and you're getting into some kind of volumetric calcs if you want it to look more-dense and less-dense in various places.

[dawn lion]

that's what I wrote

[meager pelican]

Transparents would only get "light" from the background that "shows through". Like the color buffer contents, not a light ray.

[low lichen]

A super basic way to do this is to write custom lighting that doesn't include N dot L as part of the attenuation or reduces it significantly

[dawn lion]

ok hold on let me give you an example

[meager pelican]

Well, what was wrong with that?

[dawn lion]

you were asking if I wanted light to impact the particles, I was just reiterating

[dawn lion]

doesn't include N dot L as part of the attenuation
now what in tarnation does that mean lol

[dawn lion]

hmmm ok

let me try that

thanks

[low lichen]

N dot L is what gives you the basic lambert/diffuse lighting. The faces that are facing the light source get more light.

But because particles always the camera, that doesn't really work, so you can instead just ignore this part of lighting calculation and just use the distance to the light if it's a point light

[dawn lion]

yeah that sounds good

[low lichen]

For directional lights, it would always contribute the same amount of lighting regardless of direction

[meager pelican]

N is the surface normal. L is the light direction.
But you're largely ignoring that, in MS's solution.

The problem is

That you cannot tell how many OTHER particles are blocking between the current one you're processing and the light.

So you cannot get attenuation.

[dawn lion]

I don't need that

all I need is lighting from the other side

a very simple effect

[meager pelican]

And as a result you get a bunch of same-shaded tennis balls, for example all clumped up. And if that's what you are OK with, cool.

You can use a normal map on the particles to give them some degree of visual depth.

If they're large.

[dawn lion]

yeah, I don't want a realistic volumetric effect

[analog karma]

how to make vertex snapping + affine texture mapping?

shader graph btw

[plush wind]

How can i add these field to into this shader if I put anywjere it gives error ##pragma multi_compile_instancing ```Shader "Mobile/Particles/Alpha Blended"
{

Properties 
{
    _MainTex ("Particle Texture", 2D) = "white" {}
}

Category 
{
    Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" "PreviewType"="Plane" }
    Blend SrcAlpha OneMinusSrcAlpha
    Cull Off Lighting Off ZWrite Off Fog { Color (0,0,0,0) }

    BindChannels {
        Bind "Color", color
        Bind "Vertex", vertex
        Bind "TexCoord", texcoord
    }

    SubShader {
        Pass {
            SetTexture [_MainTex] {
                combine texture * primary
            }
        }
    }
}

} ```

[quaint coyote]

First it has 2 hashtags which is wrong. Secondly you can add it in the sunshader

[plush wind]

it gives

[plush wind]

i fixed it but there is no option to open Instancing

[quaint coyote]

Guys, I was wondering if we can write a geometry shader node for the shadergraph in URP?

So that it directly works with the standard shader.

[analog karma]

help?

[quaint coyote]

Sorry no idea, others can help fingers crossed 🤞

[mental bone]

Anyone know how to fill a buffer or a texture with triangle id's and have a hdrp shader read that and compare its current triangle id with that buffer/texture. I dont want to read the data back to the cpu and use drawprocedural

[meager pelican]

One way would be to create the buffer from the model(s), and then stuff an index into the vertex attributes of the mesh, so each polygon knows its index.

[mental bone]

Hmmm add a bake phase at editor time huh ?

Isnt there like a SV target triangle id something I can use on shader model 5.0

[tepid pagoda]

Hello guys! So I made a simple shader that gives my sprite a green outline. But when I apply it to my sprite, all the transparent area of the sprite becomes black. What can I do to fix this?

[mental bone]

Show the shader

[tepid pagoda]

don't know if you can see it since it's kinda big

it's happen in other shader too

[mental bone]

You need to pass a alpha value

And set your shader to transperant or alpha cutoff

The A from your sample texture contains the original alpha

Add that to the outline before coloring it and pass that to the alpha chanel in the fragment stage

[tepid pagoda]

okay, i will try it

[meager pelican]

https://docs.microsoft.com/en-us/windows/win32/direct3d11/d3d10-graphics-programming-guide-input-assembler-stage-using#primitiveid

Good luck with that though, looks like several potential issues, in particular instancing, but IDK what you're up to.

[mental bone]

Im trying to make a renderer with drawinstanced indirect that also has per triangle gpu culling

I have most stagea down on a conceptual level but cant seem to figure out how to connect the triangle viz data to the shader so normal hdrp rendering can continue from there

[tepid pagoda]

thank you it works wonderfully!

[mental bone]

No probs

[latent thistle]

hey i havez a shader that is switched by an other version of it during runtime. On editor it work fine but on build it became magenta. Any idea

[mental bone]

Couple of things the shader requires things that are not supported on the target platform. Or a material using the shader is not present in any scene at build time causing the shader to not get build in. Check your logs of the build for details

[latent thistle]

there is no materials, i basically do

 Shader cShader = material.shader;
        material.shader = transparent;
        Color Tcolor = material.GetColor("Tint");
        Color color = material.GetColor("Tint");
        Tcolor.a = 0.1f;
        material.SetColor("Tint", Tcolor);
        yield return new WaitForEndOfFrame();
        material.shader = cShader;
        material.SetColor("Tint", color);
        yield return null;```

[mental bone]

How are there no materials if you do material.shader ?🤣

[latent thistle]

i mean, it's the basic material of the basic shader; i do not understand why it work on editor and not on build

😢

[mental bone]

Because

Probably the transparent variant

Did not get build in

Because it is not present in any scene

[latent thistle]

ah

es

[mental bone]

I have no idea what your transparent variable holds

[latent thistle]

how can i force to be on the build ?

[mental bone]

Well itsl sorta sucka

But google how to build a shader variant collection

[mental bone]

You can be sneaky and place a disabled object with that shader in a scene

So it gets build in

But the proper way is a shader variant collection

[latent thistle]

let's do that 😂

yeah, but milestone is tomorrow 😂 so

[sturdy hawk]

Guys I'm having a problem with enums in My shader

I Created an Enum _Fx

I've set it as uniform float

but it won't enter my if statment

what am I missing?

[cursive solar]

Hey yall, Can somebody explain to me when I use the Parallax Occlusion mapping node and I change the UV in from UV0 to UV1 it breaks my shader?

[marble plover]

hey is there a up to date tutorial for this style of shader ? https://www.youtube.com/watch?v=DpXPhGeCqus

[grizzled bolt]

For that exact style? Probably not
Thought the shader graph UI has been reorganized, few tutorials have become incompatible as a result of changes

[bronze salmon]

newbie shader question, Surface Shader, what is Metallic changing? I'd think metallic-ness would be glossiness, but- well it ain't so :P
Also, what language is the .shader file?

[grizzled bolt]

Metallic workflow is a whole topic of its own but mainly it determines if base color should tint specular reflections

[bronze salmon]

What about my colors? It seems they're a bit bright- or faded? If I turn them to be darker, the look right however

[grizzled bolt]

That's entirely dependent on the lighting, color space and possible post processing

[ornate blade]

Cant see what im doing wrong here, the top of the cylinder is supposed to be clear not gray.
Lit shader, surface set to transparent, alpha set correctly... turning on alpha clip just makes it all gray which is somewhat expected. Thoughts?

(reposted to remove client logo haha)

[grizzled bolt]

I don't spot any obvious issues but it might be clearer to use the height gradient as alpha and use a solid color for emission and base color

Since the gradient works already, using it as alpha directly should make that work as well

And if you use the gradient as color as well you'll get greyish haze where it fades out

[analog karma]

im starting to think that texture warping or vertex snapping isn't possible in shader graph

[ornate blade]

object space gradient, fed directly to alpha. Solid color directly into Base Color, still seeing it. Havent had this issue before, very weird

[analog karma]

so im gonna ask once again, how do i go about making ps1 style effects in shader graph? mainly texture warping and vertex snapping.

[grizzled bolt]

I've seen pretty amazing feats performed with SG, but for what you're trying to do there's certainly no nodes ready to go
You'd have to know like, shader maths and stuff

[grizzled bolt]

I still don't see anything wrong but that rules out problems iwth the color inputs at least

Can you make it transparent at all if you drop the nodes entirely?

[ornate blade]

nope, just goes solid grey

its like its already got a mat and im just adding another one, but i checked that

tried changing the blend from alpha, all give the same result

alpha clip just makes it a hard cut from white to grey

[grizzled bolt]

That's definitely not right

Also a clue that the nodes aren't the issue

[ornate blade]

right?

Gonna check what URP im running

10.4, last verified so that should be fine

[grizzled bolt]

Could try restarting the editor

If there's something broken, or some overlay stuck on

[ornate blade]

mm true, ill give it a go

Thanks for the rubberducking btw

still grey post restart

oh my god im an idiot

there were two cylinders there

fuuuuuuck thats the worst one ive done in a while

[grizzled bolt]

it happens 😂

[ornate blade]

Spent my day teaching juniors, they should not listen to a word I say haha

thanks for the help man

[analog karma]

i did find a texture warping tutorial but its shader writing, not shader graph, is there any way i can convert it to graph?

a picture from a video

[haughty moat]

Hi, I've been dabbling in shader stuff on and off for a bit and I'm trying to practice more to add it to my resume. I mostly been training on single shader files and I was wondering how one would go around putting utility functions and the like in separate files for use in multiple shaders in a production environment.

[teal breach]

found a cool bug on M1 macs - there are some cases when sampling a fixed-size array where an out of bounds error is not handled, but rather than erroring out (as it will most of the time) it actually just soft locks the editor

I'm still trying to produce a minimal example, but can't - any simple implementation unity seems able to detect the OOB and fail to compile the shader

however, this error has been giving me grief for weeks and I'm glad to finally catch it - literally just need to put index = clamp(index, 0, 15) before sampling my dither patterns and it doesnt crash on M1 macs anymore

[wraith inlet]

You can download Unity's built in shaders from the download archive. They are a great example of how to split stuff out between files.

[haughty moat]

Shader error in 'raytracingShader': unrecognized identifier 'INVALID_UTF8_STRING' at kernel RTMain at raytracingShader.compute(1) (on d3d11)
Anyone knows what this could be caused by? it suddenly appeared and it seems that now the compiler is taking offense at the # character that I need to define a kernel
is this directive illegal in some conditions ? "#pragma kernel RTMain" (error is the same if use a bogus name for the kernel).

New compute shaders are also created with this error

Found the issue. I was using "²" in one of my comment and the compiler couldn't handle it

[quaint coyote]

Is there a specific reason why texture near camera seems pixelated ? But away from cam is quite nice n sharp

[undone anvil]

In trying to figure out what to call the technique where a texture index is encoded into another smaller texture. The pixel would get looked up and depending on say the green color, it would map a specific texture to the model

[dawn lion]

Can you send an example?

[marble plover]

yeah i noticed that but how can i made a shader look like this old tutorial ?

[grizzled bolt]

I would start by trying to follow the old tutorial 🤔

[marble plover]

yeah that's what i was gonna do but i already follow 2 tutorial of 1hours and finally didnt working because of out of date version and this tutorial is kinda long

[grizzled bolt]

What specifically about it didn't work?

[marble plover]

https://www.youtube.com/watch?v=QsLkb1aOkb8&t=116s i was following this tutorial i did everything good in the tutorial and finally i got just a sphere scaling up and down the size @grizzled bolt

[lone cave]

using HLSL how would I take all of the verticles, and say using any form of noise randomly displace their vertices to create a sort of glitching effect as if the model was broken? Can anyone help?

[jovial vine]

does anyone know why my textures are acting all weird?

[low lichen]

Looks like weird normals on the mesh, making the light reflect inaccurately.

[jovial vine]

it ist

i fixed it

im stupid i was exporting the mesh with the light

and i dont want a shadow map for the mesh

[wide thicket]

How do I make a Voronoi outline in the shader graph?

getting this result and i can't tighten it without it getting rounded off

while i'm trying to achieve something more like this

i know blender has a voronoi crackle that does this but i'm trying to create the effect in Unity

[jagged escarp]

Anyone have a good textbook/course recommendation for learning shader programming?

[tame topaz]

https://learn.jettelly.com/unity-shader-bible/

You could check this out

[simple violet]

Does this cover matrices?

I need a resource that teaches matrices in an easy to understand way

The catlike coding tutorial is too hard for me

[wide thicket]

i plugged it into an if node with a paramater named "if_true_then_make_lines_sharp" but it's not doing anything

[simple violet]

Try the step node

[wide thicket]

that just makes a bunch of circles

[simple violet]

Then use one minus node

[wide thicket]

now the circles are black instead of white

[simple violet]

After using step?

[wide thicket]

yup

[simple violet]

Mess with the voronol settings

[wide thicket]

they only change size and grid randomness

[simple violet]

If we could make polygons instead of circles that would fix it

Might require some math tho

[wide thicket]

cells does that but, well take a look

[wide thicket]

it creates the polygons but differntiates them by 0-1 values, instead of distance to edge

[grizzled bolt]

@wide thicket From what I understand you'd have to do math with the points originally used to generate the voronoi pattern, something we don't have access to with the node

[wide thicket]

i got it to work, had to run the cell through a sphere node, then layered it like 5 times with an offset to create a line

it's heavy but it works

[smoky cobalt]

Hello. Can anyone help me with this? I don't know what's going on or maybe it's from the settings. It happens when I put a shader for Occlusion.
In .gif is a VR Shader> SpatialMapping> Occlusion.

• Android * URP*

[marble plover]

hey can i dm you i have some questions idk if you know a lot about shader

[grizzled bolt]

It's better to ask questions here

[marble plover]

okok so i wanted to know how and if it was possible to recreate the same shader that i've made in blender but this time in unity ? Even if it's not exatly the same but something close ? I already whatch lot of tutorial but lot of them are out of date ... Ty for your time it will be appreciated

[grizzled bolt]

Sure it's possible but there are no shortcuts to learning the Unity side of shaders

[marble plover]

ty our school no formation for unity and had to make shader

it's why i watch a lot of tutorials but at the end the shader didn't work properly

[marble plover]

do you have idk keywords i can search for this kind of shader

[grizzled bolt]

You've already been looking at the kind of vertex displacement shader tutorials you need for the effect so I'm not sure what else could help you 🤔
Besides more practice so the systems become familiar

If you suspect they don't work due to editor version mismatch, you can try following the tutorials on an old version, or try finding tutorials for a new version
In time any problems arising from that become solvable to you

[marble plover]

in my original shader in blender i used voronoi but in unity i don't think it's the same think

i can't work on another version i have a whole github project working on it with the last version

[grizzled bolt]

You can install a new editor and make a new project for testing, I do it a lot

[marble plover]

and the shader will still work when i export in the new version ?

[grizzled bolt]

Blender does multi-dimensional voronoi, shader graph's is 2D by default so they don't work exactly the same

[grizzled bolt]

I can't possibly promise that 😄

[marble plover]

sad

i will try edit and redit the properties of the vertex shaders

it's only with the NoiseScale that i can edit the number of polygons etc ?

it's kinda of the movements

but too big

[fervent flare]

Anyone know how to work around the issue of one side of a plane being in shadows, when using a double sided shader?

[dim mountain]

Does anyone know why is my car texture stretching on the sides like this ? I'm following brackeys tutorial about dissolve shader

[grizzled bolt]

The parts that are transparent in the alpha channel will be stretched to save file size and avoid color bleeding

You'll probably want to multiply the texture's alpha with the noise before plugging the result into Combine

Or plug the multiply result directly into alpha, that works as well

[dim mountain]

so how to fix this

um

Ok i fixed it

[wide thicket]

I ran into the same voronoi issue from blender, so if you want 3d noise in Unity install this package:
https://github.com/JimmyCushnie/Noisy-Nodes

[wild fiber]

Does anyone know where this comes from. Got these errors out of the blue in my console.

[rough flare]

I am having issues with parameters showing up in the inspector

[teal compass]

Hi all , is there any pdf or similar to read up about shaders and understand them better ?

[grizzled bolt]

Surely many, tough it's an absolutely massive topic
If you want a beginner friendly thing that's relevant to game asset creation you could start with these
https://halisavakis.com/shaderquest-part-1-graphics-concepts/
https://www.cyanilux.com/tutorials/intro-to-shaders/

[teal compass]

definetely beginner friendly 😄 Thank you a lot for answer

[marble plover]

hey i made a new cube sphere in blender and import him in gltf for unity, i create a lot of polygons but i doesnt seems that unity detect them

it seems like for unity my polygons are gone

[knotty juniper]

do you do vertex offset via shader?

[marble plover]

nop

[knotty juniper]

why is the lower image so distorted?

[marble plover]

oh wait yeah i have a vortex ofset sry i'm tired

[knotty juniper]

the issue seem that you are doing it based on some noise that is using the UV map of the sphere
but there are UV seams that cause hard corners

you would either need to have a uv map without seams or use some other source for UV like object coordinates or world coordinates

[marble plover]

i don't really understand sorry

[knotty juniper]

in the mesh is information that determines how the texture is mapped on it.
but not the whole sphere is in one nice piec so there is a seam where the texture is not so nicly cut of
imagine how you would wrap a present or package with some textured paper there will be places where the paper ends and another piec of the paer with some other texture does not meet exacty fitting

you can put the UV map output into the color output of the shader to see what i mean

[marble plover]

in my case, the UV map output is this ?

and how can i put my UV map outside the shader, ? in another shader ?

[simple violet]

I need a resource that teaches matrices in an easy to understand way
The catlike coding tutorial is too hard for me

[ivory rover]

Is there a way to access an AppendStructuredBuffer<Type> from a kernel inside the same compute shader? Unity complains when I try to index to it like any other buffer and *surely you dont have to make a handover on the CPU side of things just to throw the same data back... right? that would be stupid *

AppendStructuredBuffer<half3> Positions;

void SetupKernel(uint3 id : SV_DispatchThreadID) {
  append to Positions;
}

void Access(uint3 id : SV_DispatchThreadID) {
  Positions[id.x] <- this is what im trying to do
}

maybe its not possible with the nature of the type of buffer, all I hope is I dont have to move as much data as that buffer holds across twice per frame :/

[scarlet crater]

Hey I have kind of a newb question, but is there a way I can toggle between color mask modes?
say I want to be able to switch between colormask rgb and colormask rgba without editing the shader file ?

of course as soon as I ask I find an answer to my question (i think)

yep, all good, nevermind

[crystal silo]

Just started learning about Shader Graph today, and I see on a bunch of videos they're using the PBR master which has options like alpha, and Metallic which don't seem to be on the Vertex-Fragment one. Any idea where I can find these?

[grizzled bolt]

PBR master is now called Lit graph and should have metallicness input visible by default

Other things like alpha may need to be enabled from graph settings now

[crystal silo]

oh i found it tysm

[mighty fog]

Big dumb idiot here. Trying to make a face that you can control the skintone of. Threw in eyes into my shader, but having trouble with 2 things:

How can I make the texture's UV's stay transparent? ("Alpha Is Transparent" seems to override the whole material and make everything that isn't the decal alpha.)

How can I layer the decal (is there a proper word for it?) over the skin shader without using multiply? The Photoshop vocabulary for this would be a "Normal Blending Mode" but obviously that means something completely different here

Edit: Okay I see that it's Blend, with the Overwrite mode selected, but is that makes it such that my materials using the same shader (without the texture) turn white. Is there a way to set a SerializedField (or whatever it's called) to ignore a certain node/fork if a material doesn't have a texture?

[grizzled bolt]

You could use a boolean with a branch to disable the blend node conditionally
Or maybe an easier solution is to make an exposed float property which controls the opacity of the blend node and defaults to 0 or 1, whichever makes the blending invisible

"Alpha is transparency" doesn't change the alpha (or transparency) of the texture at all, rather it dilates colors outwards to prevent fringing artifacts when the texture is used with alpha

[mighty fog]

Thanks! I think I understood about 95% of that! Appreciate it man

[meager pelican]

The append/consume buffers are intended to function like a stack. One kernel would append, and another would consume, maybe across frames.

If you want to index into a buffer, just use plain everyday RWStructuredBuffer and keep track of your index.

Remember you can stuff results into another small buffer, and read that small buffer back. That's really what append/consume buffers do...there's an associated small data structure keeping track of the current "stack pointer" for the buffer.

All the above is classified as "I think" and IIUC, and worth about 2-cents. 😉

[ivory rover]

Didnt think about the names as an actual usage medium I guess that makes sense (I couldnt figure out the difference between an append and consume buffer since it isnt well documented) The amount of data in that buffer varies greatly from having 100 half3's to up to millions, so allocating a compute buffer in runtime sounds like a pain in which I may be keeping the append system. So I would use both an append and consume buffer and bind the same buffer across both layouts? if so then I understand

[grand jolt]

does anybody know how can I make a depth test in shader graph?
I'm changing the Ztest value but nothing changes on my game. Thanks in advance

[timid hare]

Hello, I have some (basic I suppose) troubles with compute shaders
I copied the TMP one to add a noise dissolve, but I can't seem to influence it directly.
_NoiseIntensity ("Noise Intensity", Float) = 0 added to the Properties

float alpha = input.color.a;
if (snoise(input.atlas) < _NoiseIntensity) alpha = 0;

return faceColor * alpha;

at the end

I also added uniform float _NoiseIntensity; before the functions

I edit the value in code using Shader.PropertyToID("Noise Intensity") and I use a noise library that I tested before, that works (noises are between 1 and 0)

[timid hare]

Update, it says that it's the default material and shaders, even tho TMP use custom shaders and that I copied one to replace it correctly

[grand jolt]

what's the best way to make an outline without having to instantiate a lot of materials for each different object?

[red wedge]

Hello !
I have a problem, I want to basically shade my screen to black in vr using this shader, but it doesn't work : Only one eye become black.
Does someone could help me, please ?

    
    Properties
    {
       _worldDirection("World Direction", Vector) = (0,0,0,0)
       _power("Power",Float) = 1
    }

    Category {
    Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" }
    Blend SrcAlpha OneMinusSrcAlpha
    Lighting Off ZWrite Off

    SubShader {
        Pass {
        
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            
            #include "UnityCG.cginc"

            half3 _worldDirection;
            half _power;


            struct v2f {
                float4 vertex : SV_POSITION;
                float4 color : COLOR;
                float3 viewDir : TEXCOORD0;

                //vr single pass 
                UNITY_VERTEX_INPUT_INSTANCE_ID
                    UNITY_VERTEX_OUTPUT_STEREO
            };

            v2f vert (appdata_full v)
            {
                v2f o;


                //vr single pass 
                UNITY_SETUP_INSTANCE_ID(v);
                UNITY_INITIALIZE_OUTPUT(v2f, o);
                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);

                o.vertex = UnityObjectToClipPos(v.vertex);
                o.color = v.color;
                half3 worldPos = mul(unity_ObjectToWorld, v.vertex);
                o.viewDir = normalize( mul((float3x3)unity_CameraToWorld, float3(0,0,1)) );
                return o;
            }
            
            fixed4 frag (v2f i) : SV_Target
            {
                //vr single pass 
                UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
                float dotView = clamp( dot( normalize(_worldDirection), i.viewDir ), 0.,1.);

                float4 color = lerp(i.color, float4(0.,0.,0.,0.), pow(dotView, _power) );

                return color;
            }
            ENDCG 
        }
    }    
}
}```

[red wedge]

There is the custom pass if <i remember correctly, try searching about that :)

[vague imp]

how do i use this texture 2d as a normal map??

[latent thistle]

is anyone is familiar with deferred rendering path under urp ? i do not understand why despite my shader (made using shader graph) is fully black i have a lighting

[timid hare]

I figured mine out, I had to use _tmp.materialForRendering instead of _tmp.material. If it can help anyone

[vague imp]

?

[knotty juniper]

The Normal output in the Vertex Stage is for setting the normal of the vertex
If you wan to use a normal map it should be go into the Normal Output of the Fragment Stage
you still need to sample the texture first

[vague imp]

ahhhh thank you

how can i turn the output of this slerp node blurry or into a blurry low res image?? i just want it to look blurry

[grizzled bolt]

That's the step node, not "slerp", which creates very sharp transitions
There aren't many ways to blur things, so it's better to find another way

[vague imp]

Yea my bad,i meant step

[desert sundial]

https://youtu.be/2I06F7g4b8Y?t=26
Anyone knows how this skybox effect is working? I am not familiar with this 2d things.

[lean lotus]

Hey so I’m currently using a compute shader to pathtrace in real time and it’s working, but I wanna see the performance comparison to using rtx hardware, is it possible to use raytracing shaders that use RTX hardware in place of the traversal kernels I have in the compute shader for intersection data, while still using the other kernels in the compute shader(for materials and such)?

[drowsy linden]

Ok so how do I get it where I can draw a boundary where an object touches something else. I have to compare depth textures somehow, right?

[sweet cosmos]

Can anyone help me with outline shader I took from the Internet? The problem is that I get the outline but the object becomes dyed to the color listed in the shader as main color. I would like to have the natural color. https://pastebin.com/FpCa0Sew

[meager pelican]

Assign the texture component to the object's texture (that's what gives the natural color around parts of the object). Unless it's a solid color object, if so , just assign a different color to Main Color. That's the tint. White would leave the texture colors unchanged.

It depends on how the model is set up. If it's using vertex colors, for example, you'd have to change the shader to use them.

[sweet cosmos]

💀

[marble plover]

hey, can someone explain me how to color this voronoi gradient ?

i tried adding a color but i doesnt seems to apply to the base color

[meager pelican]

Multiply it by the tint color

[sweet cosmos]

Can you do it in my stead please? I am complete noob with shaders

[meager pelican]

I don't have the texture.
What is is supposed to look like?

[sweet cosmos]

1min

[marble plover]

like this ? i don't really know were to put it

[meager pelican]

See where it says (base) and there's a blank texture box? Click on that and add the texture (assuming there is supposed to be one).

[sweet cosmos]

Outline shader is the second one. The character looks like this after the first material's processing

[meager pelican]

I can barely read that, but, take the gray scale result of the voronoi and multiply it by some tint color you put on the blackboard or whatever color you want to use. Plug that into base color.

[muted ruin]

Hi, does anyone know how to apply a subsurface scattering map to a material? I've got it on a (B) channel but I can't find a map here to slot it in.

[marble plover]

like that ? or i need to put the multiple after the voronoi gradient ?

[meager pelican]

The latter.
Don't multiply a tiling and offset (that's a UV thing) by a color.
The voronoi is a grey scale value, 0 to 1. So if you want to tint that result (that was your question as I understand it)...you multiply the voronoi result (0 to 1) by a color, and you scale that color according to the voronoi pattern.

[marble plover]

okok i find out !

ty !

ok now i have another question

i made a sphere in blender with lot of polygons

and when i import in unity all my polygons are gone

idk why

[meager pelican]

Maybe it is importing quads instead of triangles.
Go back to blender and fix the model to be triangles, that's the best way. IIRC there's a triangulate function/process. Google it.

[marble plover]

like this, idk if you see my problem

i want it to have a more spheric shape while moving

it's my base sphere

[sweet cosmos]

CarpeFunSoftware can you please answer the question I had? You asked how my object was supposed to look and I provided a screenshot

[meager pelican]

OK, and that comes from a texture or what?

[meager pelican]

Make those triangles, not quads.

https://docs.blender.org/manual/en/latest/modeling/meshes/editing/face/triangulate_faces.html

[marble plover]

i will try

[sweet cosmos]

Um... I guess the texture is provided to material as main color

Albedo map*

[meager pelican]

Right, it's called "Base" and there's the tiling/offset and the slot for the texture.
You showed me the outline material, but in that one (probably a 2nd material?) you didn't have a texture.

You may not need a 2nd material at all, BTW. Not sure.

[sweet cosmos]

The first is a so called "Standard" shader

[meager pelican]

Show me that one (material for the object).

[marble plover]

hmm i doesnt seems to work either

[meager pelican]

OK, see? There's a texture assigned to it in albedo. Try plugging that texture into "Base" on your outline material.

The texture slot.

[sweet cosmos]

Is there such?

[meager pelican]

See that square under the white and red boxes? Where it says "none, texture".

Click "select" and pick the same texture as in the 1st material.

[sweet cosmos]

Oh

But the character's color is very different from before

[grizzled bolt]

The polygons are definitely all there as we can see here
Rather you're fundamentally misunderstanding a lot of what's happening with your shader

[sweet cosmos]

Before

After

[meager pelican]

Well, that's closer. lol. At least you have some greens and blues. 😉
BUT, this outline shader isn't the same as the "standard" shader.
In that material you have an emission setting, and maybe other things going on with lighting. And it's orange in the 1st one.

[sweet cosmos]

Yeah, there is a color which is also applied

I tried to move it to the new material but...

[meager pelican]

The two shaders just don't work the same.
You could try clipping the pixels for anything that isn't an outline part. Maybe ONLY do the outline part, and leave the other part from the 1st material pass.

[sweet cosmos]

It would be nice

[meager pelican]

So try commenting out passes in your shader until it works or all fails.

[sweet cosmos]

It is going to be hard work...

[meager pelican]

The passes that do the outline are labeled "OUTLINE"...

[sweet cosmos]

There are only 2 passes

And I commented both of them

This way I deleted the outline

But the bones are still white

[meager pelican]

The OUTLINE ones are the ones you keep.

[sweet cosmos]

I know

But there are no more passes

But the bones are still white

So the shader still affects the texture passed by the first shader

[meager pelican]

IDK, I'd have to pull it up, get some model, make a test case with a standard material, your outline shader, and then figure it all out.

I got you as far as filling in the required field for the texture color.

But you have to realize that you can't just plug in one outline material shader over top of another and expect it to work unless it is designed to NOT modify the original object's 1st draw.

[sweet cosmos]

🤔

What if I copy standard shader

And then add outline to it

[meager pelican]

Have you seen the standard shader?

[sweet cosmos]

No

But I guess I can find its code

The bigger problem is how to add outline to it

[meager pelican]

Or alter your shader to be more standard-like.
Either way you're biting off a lot. Just FYI.

If you're new

But the outline shader is using a surface shader which really defaults to a standard-like shader if you set things like metallic, and emission and such.

[sweet cosmos]

Can you write shaders?

Like, cg

[meager pelican]

I mostly do HLSL, but I write shaders. But I'm not open for a small contract right now. You can try unity connect/forum or whatever they call it these days.

[sweet cosmos]

I was just interested whether it takes a lot of time to learn how to make shaders like outline shader

[meager pelican]

There's at least 5 ways to make an outline, probably 5000 variants. And that's just one concept.

[sweet cosmos]

You look like a shader guy

[meager pelican]

https://alexanderameye.github.io/notes/rendering-outlines/

https://bgolus.medium.com/the-quest-for-very-wide-outlines-ba82ed442cd9

[sweet cosmos]

So usually you just google about the graphics effect you want?

[meager pelican]

Well, that's a good place to start, unless you're inventing something new. Outlines come up every other day here, but you're asking a specific question on a specific shader you pasted over a standard shader.

Both of those writers are contributors here, and/or the forums.

Also see the pinned notes in the title bar above.

[sweet cosmos]

Is there a big difference between writing on cg and on hlsl?

[meager pelican]

if by CG you mean OpenGL the general concepts apply, but you have to know the specific API differences.

Unity basically uses HLSL and translates to OpenGL where needed, at least in the new systems.

You might find that the new scriptable render pipelines like URP are more approachable with shader graph.

[drowsy linden]

How do I figure out where two objects intersect. I don’t know where to begin other than the vague notion of using the depth texture

[meager pelican]

Did you google "unity object intersection shader"?

[sweet cosmos]

I tried to copy Ben Golus' final FJA shader, pasted main texture and got a weird result, can you help me ?

[ionic smelt]

Heyo there, does anybody perhaps know if there's some way to change the alpha mode from Fade Out to Cutout for RealToon in URP12? Thanks!

[fervent spire]

does anyone know how i can make a shader like this? i’m using a capsule as that outside blue part, but i don’t know how to make it fade out like in the picture.

[shadow locust]

Bloom postprocessing effect.

[fervent spire]

i’m making a mod for a game, i don’t think i can do that

would this be possible with particles?

[fervent spire]

nvm i got it

[wanton grove]

Hi whats the decimal precision of a fixed number?

[knotty juniper]

from the unity docs:
"Low precision: fixed
Lowest precision fixed point value. Generally 11 bits, with a range of –2.0 to +2.0 and 1/256th precision."
https://docs.unity3d.com/Manual/SL-DataTypesAndPrecision.html

[wanton grove]

I've read that, but I'm not sure how many decimal places that allows me to use

I'm sure it has to do with the 1/256 though

[tardy glade]

Hopefully this is the right channel to ask: I'm trying to import a .fbx model into Unity to use it for a animation. In Blender the alpha textures worked, but here I can't seem to make them transparent. Any ideas?

[knotty juniper]

What shader do you use in unity?
are all textures set correctly?

To what is the rendermode of the material set?

[tardy glade]

Using the default one in the "Universal Render Pipeline" preset when you create a new project. I kind of managed to make them transparent but they aren't behaving like when I had it in Blender. I also think I'm not setting the textures correctly.

At least it's transparent now.

[tardy glade]

And I know "not behaving like in Blender" might be obvious that I need to change something, I'm just not sure where.

[knotty juniper]

the noraml transparency mode has issue with sorting
Better use the Surface type "Opaque" and the checkbox in "Alpha Clip"

[tardy glade]

Thank you. I think it's better now.

[drowsy linden]

yeah, but all I have been able to get is a depth texture with some fresnel attached. It shifts around whenever I move the camera which is no good

[drowsy linden]

ok i finally found the brackeys tutorial lmao

wait, now its doing it again. It's moving around with the camera.

here's my shader graph

[latent thistle]

is anyone is familiar with deferred rendering path under urp ? i do not understand why despite my shader (made using shader graph) is fully black i have a lighting

[sweet cosmos]

Is there a way to not modify the object's surface but to keep the one from the previous material on object?

[grand jolt]

Cg is a now defunct language by Nvidia that had a compiler that targeted both HLSL and GLSL as outputs. In Unity using the CGPROGRAM defines just means you'll have the headers for the builtin rendering pipeline automatically included.

[ionic smelt]

Yo, how'd you get it to work? All I can think of is adding it in a texture and billboarding it if it's like a lower poly kinda kinda game.

[grand jolt]

@ionic smelt I suspect they combined smoothstep and a fresnel.

So basically calculating the dot product of the mesh normal and the view vector, getting its absolute value and then tightening up the fading with a smoothstep.

[ionic smelt]

Oh, right. Of course you could use the shadergraph, too. I was thinking we tried to keep it simple. lmao

[grand jolt]

They were talking about implementing it through a shader though 😄

[ionic smelt]

Oh? Didn't see.

[static lava]

hello i hope every one is having a good day, i have the following problem, would appriciaty any help, i have the following model unity, i disabled the normals in the mesh, in order to get the same amount of vertices, where i originally exported it, now it is important that i have the same vertices, since i am getting the verices color data from outside and its changing in real time, my question is there a way to make it look better (with edges and shadows) without touching the normals or maybe some how have normals but with the same amount of vertices ?

[latent thistle]

there is a good way to add to different shader graph ?

[hardy socket]

do u mean like blending colors ?

[grizzled bolt]

Normals don't change the amount of vertices unless they're split/hard
What is your goal exactly?

[static lava]

i managed to Recalculate the normals in the script and it some how mentained the amount of verices, if i were to check calculate/import, the amount of vertices some how goes up, my goal is the following: i am sending vertices color information from python to unity c# and these color information have the size of the mesh vertices (makes sense) but when i receive them in unity and try to apply the colors (since there were more vertices than the original exported mesh) it destroyed the color placemet, but now its working its just weird to me that the mesh has more vertices if i enabled normals..

what was happening before

[latent thistle]

i mean for exemple i have a base shader, but cetain objects need a few more things (like vertex displacement etc) is the best way is to wrap the main sahder inside a subshader and then recrate a lot of shader ?

[hardy socket]

ohh... i cant help u with this srry

[grizzled bolt]

There are easier ways to give color to a mesh 😄
Seems like you're trying to do something very specific

[static lava]

how would you do it ?

i am not really good with these stuff 😄

[grizzled bolt]

Ordinary texture maps? 🤔

[latent thistle]

    IEnumerator ScanFx(float _duration)
    {
       
        Renderer r = GetComponent<Renderer>();
        if (r != null)
        {
            //setting up effect
            Shader tShader = r.material.shader;
            r.material.shader = hologramShader;

            //setting up shader properties 
            {
                r.material.SetColor("Tint", ScanFxColor);
                r.material.SetFloat("Speed", ScanFxSpeed);
                r.material.SetFloat("SpeedOverlap", ScanFxOverlapSpeed);
                r.material.SetFloat("Density", ScanFxDensity);
                r.material.SetFloat("rimLightIntensity", ScanFxRimLightIntensity);
                
                r.material.SetKeyword(r.material.shader.keywordSpace.FindKeyword("isRimLight"), ScanFxisRimLight);
                r.material.SetKeyword(r.material.shader.keywordSpace.FindKeyword("FollowCamera"), ScanFxisFollowCamera);
            }

            yield return new WaitForSeconds(_duration);

            //reset
            r.material.shader = tShader;
        }
        
        yield return null;
    }```

seze you any mistake ? my properties are not set 😦

[static lava]

i originally had that in plan and i actually implemented it but its way less efficient, anyways this is a glance of the project i am working on:
so i have this 3D model of a head, essentially what i did is a brain heatmap ( just color values mapped on a specific colormap ), these color values can be applied on the vertces points or the cells( i did them on points), this heatmap is done in a pyhon library called VTK, from python i can get the vertex colors (scalars) and transform them into RGBA colors, i set up a python server socket, where i essentially send these color values as json to unity and change the mesh colors accordingly every frame. Before doing this i did the whole process in blender, where i first exported every 3d model with the heatmap applied as .ply file and then had to uv unwrap every model and extract every projected image, and this took an awful lot of time and its really a bad solution to the problem. I am open if you have ideas about how i can go around this 🙂 ty for your time

oh i forgot to mention this is AR (augemnted reality ) using the hololens, this is essentially what happens when i run the unity application 😄

[grizzled bolt]

Right, definitely a very specific use case ^^
I'm not great at a lot of the parts of your process but this is all good info for someone else who might be

[meager pelican]

use

m.SetColor(.......
m.SetColor(......```
When you make a reference to renderer.material you end up cloning a new material.  So in your code you've created a cloned material.  Use sharedMaterial if you want to modify the existing material, and it would also modify it for all objects using that material instance. 
Don't forget to use an underscore if you need one.  
And if using shader graph, pay attention to the internal reference name, not the "pretty display name" it shows you. 
Also you should investigate using propertyID's when you get this draft working, much faster.

[fervent spire]

i actually just downloaded a shader that was made in visual studio, but are you able to send a pic of how to do the one you just explained? i don't really know what you mean

[grand jolt]

Something like this maybe? I've been using URP for a long time so getting the view/normal into the same coordinate space is up to you.

float nDotV = abs(dot(viewDirWS.xyz, normalWS.xyz));
float value = 1.0 - smoothstep(0.7, 0.9, nDotV);
float3 color = value * _GlowColor.rgb;
return float4(color, 1.0);```

I might have messed up the math but the principle is there somewhere.

[fervent spire]

is it possible to get it to fade out into the environment?

like this

[prime timber]

I added the Blit / DrawFullscreen feature that unity has in their example assets on their github page to my urp project. What do I have to keep in mind when creating a shader for the blit material? I was thinking naming the texture reference to _SourceTexture is necessary so I did that but after adding the material to the renderer feature the screen is just blue :/

[grand jolt]

You could use transparency and add the same code but blending towards zero alpha.

Or sample the camera color texture (grab pass in builtin render pipeline, camera color texture in URP) and blend to it in an opaque shader.

[fossil cloak]

Hey Guys. After Updating Unity to 2021.3 my shadergraph shader is not working anymore.
Is there a a new and special Shadergraph for 2D Sprites in an UI?

My Sprites have now a red or blue Background, depending on the normal facing the camera i think.
But only in gameview. In Sceneview the alpha is working correctly

[regal stag]

It's likely that you need to set the pass index on the feature. It defaults to -1 iirc (which renders all passes) but you don't want it to blit with the Shadowcaster, DepthOnly, etc passes. Only the unlit/forward one (probably index 0)

[prime timber]

Damn, that worked. You are an angel!

[fervent spire]

thanks alot!

[barren abyss]

I'm not sure but upgrading the project render pipeline might help

[fossil cloak]

Do you know where i do this?

[barren abyss]

Yup. Upgrading project render pipeline( google it)

[fossil cloak]

Didnt work ^^

[fossil cloak]

Scene View and Game View 😄

[calm rock]

Hey guys,
I'm trying to reduce the number of shader variants I use but it seems I can only use 'Shader Variant Collections' on hlsl shaders and not on shadergraphs. Do I have any other options?

[calm rock]

moving from 2019 to 2021 has really, really slowed down shader compilation. Does anybody know why?

[calm rock]

And doing a build and then immediately doing another build still triggers a huge shader recalculation, so it's clearly not caching properly. Using 2021.3.1f1

[stiff delta]

hello, been wondering how i could make only certain gameobjects have the bloom effect

ive watched a couple of tutorials where they make a material out of a shader graph that allows them to change the HDR intensity to control bloom but no matter how closely i follow them they never work for me

[simple violet]

there's no other option than that

[rancid silo]

Do u have any good shaders tutorial

For Unity 2021.2.5f

1

[dim yoke]

Do you mean shader graph or handwritten shaders?

[rancid silo]

Graph

And generaly

Intro to shaders

@dim yoke where are u from

Cuz not from UK or USA

Or maybe

Are u from Poland

[dim yoke]

Nah

[rancid silo]

Ok

Just asked

Anyways do u have some tutorials about

Shaders

(I know that im wriring too much sry for that)

I just have

Too many questions

I guess

R i am frazy

Crazy

[dim yoke]

Don’t spam… check the pinned resources on this channel. Cyans site seems very promising

[stiff delta]

well then can you tell me what might be wrong with my shader? its just an hdr color going into the color module

[rancid silo]

Sry for that again

[stiff delta]

but intensity only makes it brighter or darker in color, no bloom effect at all

[stiff delta]

brackeys has a couple good ones

just search for "brackeys shaders" and youll probably get a pretty ok introduction

[rancid silo]

Yeh i know but i have different version

2021.2.5f1

And he has like 2019/2020 version

[simple violet]

is post process turned on correctly??

[simple violet]

https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@14.0/manual/integration-with-post-processing.html

[stiff delta]

yeah, both in camera and project settings

well i hope it is at least

imma read through that article and check if ive missed a step

huh

i didnt change anything and it just works now

[dim yoke]

doesn't seem like that. atleast it's updated very recently. nothing have changed since that

[stiff delta]

thats weird

it wasnt working a second ago. reloading the project might have just fixed it itself

[jagged escarp]

Anyone know where I can find the API documentation for:
Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl

[simple violet]

https://github.com/Unity-Technologies/Graphics/tree/master/Packages/com.unity.render-pipelines.universal/ShaderLibrary

[jagged escarp]

thank you for this! Is there really no official unity docs for the APIs tho?

[rancid silo]

If there would be he would probably send that

[thin crater]

Hello! I've managed to get a procedural terrain generation with a randomly-built mesh as a terrain. The problem is that I can't find any tutorial, post or topic around the internet on how to apply textures and "fuse" them in my mesh (e.g. "melt" them in the borders between two biomes). I want to apply the textures not based on the height but based on a 2d array that is "linked" to the mesh, on which every element on the array corresponds to a square. Can someone help me? Any useful links or anything?

This problem is blocking me for months now 😦

[keen patio]

[GenerateHLSL] how to generate member function?

[simple violet]

i heard u need to use smoothstep for that

[thin crater]

So if I get to have a shader that correctly loads a texture in a mesh, I have to use that to "smooth" the biome's edges?

[simple violet]

yup

[thin crater]

Well I still don't know how to do that 🤔

[queen orchid]

Hello! Is it possible to replace only vertex shader in camera? I've only found an unanswered question on this: https://answers.unity.com/questions/467172/replace-vertex-shader-for-all-shaders.html

[lime star]

is there a way to pass a texture2d to a compute shader? or do i have to do some magic first? currently its giving me the error that the uav flag wasnt set, however i dont know how to set it. (image 1 is in the compute shader, image 2 is me passing it to the compute shader)

[meager pelican]

No. The shader includes all active stages in one shader.

You cannot replace just a piece of it. There's shader replacement, but not shader-stage replacement.

[meager pelican]

IIRC there's some kind of writable-flag on the texture importer in the inspector.

[lime star]

tried that, didnt work

[meager pelican]

Well, IDK then, but you might want to publish the exact error message.

[meager pelican]

Is that in the editor or a build?

[lime star]

im not building the project, just pressing play in unity

so i guess the editor

[meager pelican]

Maybe this will give you some help in the right direction: https://forum.unity.com/threads/read-and-write-rwtexture2d-in-compute-shader.515008/
they indicated a problem on android, but, they said it worked in PC.

[lime star]

ill take a look, thanks

[meager pelican]

That embedded link to post#19 in the shader-toy question writes to a RWT2D. Note that they create it as a render texture.

So from the looks of it, for all of us reading this, a Texture2D is a SRV and a Render Texture is a UAV. At least that's what I'm seeing.

[lime star]

ye, so far ive always used render textures, but i want to input a texture, like an image, and i dont know how to do that in render texture form

[meager pelican]

Also this, near the end, may help with multiple views: https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/sm5-object-rwtexture2d
So you could have a RWTexture2D for the compute shader, and bind that as a Texture2D in a regular shader.

[meager pelican]

You can't, it has to be a render texture to bind it as a UAV. (I think).
But you could blit a t2D to an RT that you created.

That is, from what I can tell. If the writable flag doesn't work, that is.

Then later, you can still bind the UAV as a SRV and use it like a T2D in a "regular" shader (see the example in the link above).

You could always ask a question in the Unity forums to find out if the texture importer has a way to bind a texture to a UAV directly. But that's not really a shader question.

[grand jolt]

I need a basic shader for a realistic horror games for backrooms

[dim yoke]

Why wouldn’t the default shaders work?

[grand jolt]

There is default?

Oh XD I’ll see them

[dim yoke]

When you create new material in unity, they obviously have a shader in them

[grand jolt]

Oh ok

Can I dm u for help?

[dim yoke]

Nah. You can ask here if you need help

[keen moth]

Anyone knows how to open .shader file in shader graph? i accidently made it, so it opens in notepad, and idk how to turn it back

[lunar fiber]

Hello all. Hoping someone can help me with an issue. trying to pass an array of structs to a computeshader. everything worked well until I added a fixed size float array to the struct. now I am getting a must be blittleable error. Any suggestions. Thanks

[regal stag]

.shader files are for written code, you cannot open them as a graph. Shader graphs are different files (with the .shadergraph extension). They are different options under the Create -> Shaders menu, assuming Shader Graph is also installed as a package (or URP/HDRP which includes Shader Graph automatically)

[keen moth]

oh ok got it, i was lost for like 3 hours now, thanks!

[white marsh]

is there any way to write a shader that uses edge detection to make an outline on only the mesh with the shader on it? the ways ive seen so far is using post processing to add outlines to all objects. just wondering if its possible

[wanton grove]

Is it possible to set the texture variable of a compute shader using a different compute shader file? Betteryet, is there anyway I could use 2 kernel functions to share variables within the same file?

[white marsh]

actually, is there a way i can use stencils on different passes so that i can properly make an outline on more complex geometry without it intersecting with the rest of the mesh? like this

i figured it out

[spare wedge]

Hi, I have created a shader that I use to make a slash fx, but here I'm having an artefact and I don't know why, I share with you the shader and the particle system setting that I use.

Seems like it grow if the camera go away from it. I thought that this was because the texture touch the border of the image but that's not it.

Cans someone help me ? Thank you.

[regal stag]

Might still be related to the texture clamping edges if mip maps are enabled on it. Can try disabling them in the texture's import settings, or I think there's a "border mip maps" option which might help.

[spare wedge]

that was it thanks, I disabled the mip map and it worked ! Thanks, you saved me.

[grand jolt]

hey can someone tell me why i can't activate these nodes.

[regal stag]

They get enabled if you change the Graph Settings, in the Graph Inspector window (toggled top right). Like graph type to Transparent, and/or enabling Alpha Clipping.

[grand jolt]

@regal stag thank tou so much!

[white marsh]

Is there a good tutorial or guide on how to use multiple light sources anywhere online?

[thin crater]

Hey, I managed to apply a terrain texture to my terrain mesh using a color mask and a colored texture as an array to filter the texture and place it only where it's needed:

However it has crisp edges and I'd like to smooth them

That's the current effect between grass and sand... Is there a way to do that?

[lethal steppe]

Hi Guys! When I use material.SetTexture("_MainTex", tex); in multiple shaders with the same texture will it be uploaded to the gpu multiple times? If no, great! 🙂 If yes, can I somehow pass a 'reference' as a texture? Thx ^^

[dim yoke]

Btw you can use material.mainTexture = … instead of SetTexture(”_MainTex”, …)

[meager zinc]

hey guys any help on helping me find what kind of camera filter is this game using?

https://www.youtube.com/watch?v=Vl19y_ydbvo&t=5s

[meager pelican]

IIUC, the texture "tex" should only be uploaded once. So you're good. The engine will "reference" it, as you hope. It knows. IICU, it checks that "tex" resource is uploaded and available/bound in context for each draw, or maybe the API handles that somehow, and uploads it and sets it up if it is not there anymore.

[meager pelican]

IDK, but it looks like a full-screen distortion effect...?post processing? since it happens when the camera is still. some type of depth + local effect displacement maybe? Maybe some kind of refraction, under-water ish?
I suppose they could pass such data to all shaders as they draw too, rather than some post processing pass. It's sometimes harder to try to duplicate exactly what some other game did than it is to invent your own methods. 2-cents.

[meager pelican]

https://www.youtube.com/watch?v=XatLA5SGgAs
See #4 (2nd one he talks about)
he provides source, it is NOT a full screen process, it is time based vertex offset for each object, and to get a fine wobble like that IDK if they're using higher-poly meshes or what. Would be interesting to experiment with.

[charred berry]

I cant quite find anything referring to it based out of unity, but does anyone have a link to, or know a way to use Gourad Shading in unity as opposed to phong. I cant find anything about writing shaders for it or such. Thanks again, feel free to ping me.

[lyric copper]

Anyone have any ideas for a reveal shader/clip? I have 2 environments that exist in the same space. Only one is visible at a time. I want to reveal one and hide the other one and vice versa. Thinking of using a plane that would move up or down revealing and hiding parts of each environment.

[lean lotus]

How the hell do you properly read from a 32 bit indexbuffer graphics buffer in a compute shader? this is driving me insane

[errant bay]

Hey guys. I was playing with Shader Graph and force field Shader. I've created something like this and there is one problem. I want to add transparency on blue elements (upper Block), without changing transparency of Emission, Someone can tell me how to do this? I will be glad for help

[delicate bison]

ok this warning shows up

during 1st installation of Highlighting system

[grizzled bolt]

@meager zinc @meager pelican I'm quite sure it is a full screen effect, one of these

https://upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Pixel-Art_Scaling_Comparison.png/800px-Pixel-Art_Scaling_Comparison.png

Otherwise you would require every mesh to have the exact same vertex density at every point to distort them together seamlessly

Simpler to render at lower resolution and upscale, though I don't know exactly how these effects are made

[normal rose]

can i resize an image on a line renderer? like i have a shader and a image to scroll along a line renderer but the problem is ... image get shrinked along the line renderer

[meager pelican]

That's what I thought at first too. But he published source for wobbly objects, it's a vertex thing. (see link I posted, you can download the source).

[grizzled bolt]

Tried modifying the "X tiling" of Tiling And Offset?

[grizzled bolt]

It has to be a different effect I'm sure
The shader doesn't have snapping/rounding when the camera turns, and the game doesn't have idle wobble when the camera is still

I can't say it doesn't use the shader, but it certainly uses a full screen upscaler

[meager pelican]

It DID idle-wobble, when I watched it. Seemed to to me. Hence my first post about a possibly-depth-based post processing effect. But then I found his source, and a video about it.

Maybe they use both, or they have two systems. IDK.

That goes back to my original point, sometimes it is easier to create your own effect than it is trying to figure out exactly what someone else did. 😉

[normal rose]

ok thx, i managed to do that and its looking this now but i want to squeeze it from the top and bottom but if i try to do it from y its looking weird (2nd picture) its making another arrow ontop

[grizzled bolt]

If X doesn't work try Y next, logically

[meager pelican]

You might, instead, want to look into flow mapping. Then you can do curves and stuff. Weird shapes. You build the flow into the texture.

[grizzled bolt]

That won't help with trying to tile a texture on a line renderer
It'll have the same problem

[normal rose]

x works perfectly it made the arrow shorter from front and back but i want to make it smaller from top and bottom

without making that weird thing from 2nd picture

[meager pelican]

Well, don't use a line renderer for the effect...
Meh, it was just a thought.

[grizzled bolt]

Ah, right
I can't think of a simple way to make the texture only tile horizontally but not vertically
Normally you set it to either tile or clamp on all axes

But you could make the arrow in the texture smaller and repeated horizontally

I'm sure there is a way to do it using only sampler states but I don't know it

[normal rose]

ye i managed to do that by making the arrow smaller from the texture thx for helping guys

[meager pelican]

Unless you can know the direction of flow, IDK how you'd scale it. Then there's the elbow turn. So maybe a geometry shader could look at the polygon and "decide" a flow direction from the vertex locations, but otherwise, one vertex or one textel doesn't know where the next one is going.

[grizzled bolt]

If we scale it down it repeats lengthwise which is good, but it also repeats sideways which we wouldn't want in this situation
Sampler state can define that a texture repeats in U direction but not V or vice versa, but the sampler state node in SG doesn't allow separate tilings for the axes as far as I know

[meager pelican]

It doesn't? I thought you pass it a float2 or 4 (2 for tile, 2 for offset)

sec...
(Oh, sampler state, not tiling and offset)

[grizzled bolt]

can't do much with it

I guess a custom function with options could be used to replace it

[meager pelican]

There's a node: https://learn.unity.com/tutorial/shader-graph-tiling-and-offset-2019-3#5f501399edbc2a0021022948

But yeah, just sampler state won't do it. You're right about that.

[meager zinc]

@grizzled bolt yep I have the same opinion, it is a full screen effect you can notice the density is the same in all spots off the screen

[meager pelican]

Then it's going to be more what I said in my first post, possibly with depth accounted for. You'd probably want to scale something up to deal with the edges of the screen, and sample inside the source a bit to have some border to wobble with.

He also had custom lighting in that shader. And flat colors.

Using surface shaders.

he had localized "explosion" effects too. Not uniform.

[grizzled bolt]

Shouldn't be more complex than:
Scale down with nearest neighbor interpolation (or render at lower resolution to begin with), scale up with the upscaler algorithm
The wobble is a side effect of the initial downscaling
Sure there's also toon shading and posterized colors to get the whole look

[tribal ice]

I am very new to shaders, can Some one tell me simple way to make simple water surface waving for 2d platformer game. I dont need reflection stuff. Just need some surface, you know the water tension effect...like some thick look for the water surface. \

[outer hill]

I'm using fresnel here to make an outline, but since it creates more like a gradient, I'm trying to make it more like a perfect and defined outline. As you can see, I tried adding a contrast node but it's not quite what I want, since it still leaves two different colors. I am looking for something more like curves, to make the midpoints reach the lights, and make the shadows darker, idk if it makes sense. I'm new to shader graph.

[grizzled bolt]

Step or Smooth Step could be what you want

if I'm understanding correctly

[marble plover]

Is it possible to create a tinted chrome shader in unity ? Like this

[grizzled bolt]

Of course it is
That chrome is not tinted though

[marble plover]

okok, how it is call if it's not tinted ?

[grizzled bolt]

It's just chrome or smooth metal
The color in the image comes from reflected colorful lights
If it was tinted the reflection couldn't be pure white

[dim mountain]

Hi, why does my simple noise look like this ?

It is choppy and has hard lines

[grizzled bolt]

Time has incremented to a too large value and causes floating point errors in the noise function

The solution would be to use a Fraction node before the offset, but since simple noise doesn't tile that doesn't work great
In addition to that you could use a repeating noise texture instead of the noise node for a definite fix

[dim mountain]

Okay, I changed it and now it isn't choppy but why I don't see anything in preview or in game, trail isn't visible ? I want to make that trail from tut vid "Unity Shader Graph - Stylized Trails Tutorial" (I'm using unity2d so tell me if it does not support 2d )

[grizzled bolt]

I don't know what you changed that made it disappear

If by 2D you mean URP 2D renderer that does not support a bunch of features from what I hear, but I don't know which

[dim mountain]

it wasn't visible before change too

[grizzled bolt]

What "change"

[dim mountain]

that noise

changing

[grizzled bolt]

Changing to what from what?

[dim mountain]

Nevermind, it wasn't visible from beginning i think

hm

I can't fix it

[grizzled bolt]

If the preview is stuck to a solid grey even with no nodes attached and regardless of the mesh you use to preview, that could be just an editor bug

...though I can see that you have three different Alpha Clip Thresholds, that's definitely not normal

an alpha clip threshold of 0 would make any material invisible

[dim mountain]

it just glitched because I clicked few times alpha clipping and it glitched but I think it isn't there because when I tried to remove it, there was error that said I can't delete something that doesn't exist .

[dim mountain]

help ?

[white marsh]

im trying to add shadows to my toon shader im working on, and ive seen two ways of doing it but i seem to get an error whenever i add the code to enable receiving shadows. if i try and fix the errors i eventually get stuck with this one and if i leave the errors i get these. i dont know what pos its referring to but adding a texcoord to v2f named pos seems to remove the error

im following the examples from here https://docs.unity3d.com/540/Documentation/Manual/SL-VertexFragmentShaderExamples.html

under receiving shadows

[keen moth]

anyone knows why is the preview pink?

[white marsh]

there is an error somewhere

[grizzled bolt]

Usually that happens when the shader isn't supported by the render pipeline

for example when trying to make an URP shader graph while built-in RP is still active

[keen moth]

how do i disable/enable any of these

[grizzled bolt]

Were you trying to install URP, per chance?

Kinda depends what you were doing

[keen moth]

yea its should be installed

idk if its enabled but its definitely installed

[grizzled bolt]

You must install and enable it properly

[keen moth]

yes it works now, i had to watch 3 minutes from a tutorial...

[meager pelican]

Post the shader (pastebin or whatever)

[white marsh]

oki here it is, its probably also worth to mention ive been using this guide a little https://roystan.net/articles/toon-shader.html

[lean lotus]

Hey so I have a compute shader, where I need 8 things to add to one thing, and then add that one thing to a new list
Thing is, I only want that one thing added to the new global list once instead of 8 times, how could I go about doing this?

[wanton grove]

Can a compute shader share the same texture and account for changes between kernel functions?

[meager pelican]

well, I haven't loaded it into Unity, but pos should be a float3 not a float. The macros may require specific variable names... You're using pos and also vertex at the same time. Maybe you need to, IDK, I'd have to dig in more.

[fallen stag]

Reposting in the proper channel. Does anyone know why my procedural blender granite material looks like this in Unity?

[meager pelican]

Because Unity isn't blender?
You need to recreate shaders in Unity.

[fallen stag]

Oh. I looked it up and it seemed like you could import those materials, sorry

[white marsh]

apparently what im trying is very old way of doing it which seems to be out of date

[meager pelican]

Well, materials kind of import, but shaders won't. And IDK how a PROCEDURAL material works in blender, but probably has a shader part.

[fallen stag]

Alright, thank you

[meager pelican]

You're not that far off, trace down the macros and variable names. But pos is a float3 in 3D. And it might be used instead of your v.vertex (SV_POSITION semantic).

And yeah, check newer versions.

[white marsh]

it actually seems like its float4, it says cant convert float3 to float4 if i use float3

[meager pelican]

OK, float4, mb.
This says you need a variable named pos, not position or vertex:
https://catlikecoding.com/unity/tutorials/rendering/part-7/
So you'd want your pos to be your SV_POSITION variable.

He deliberately goes through syntax errors and names, and fixes them in that tut.

And yeah, brain cramp on the float3 vs float4, sorry.

I think .w is the perspective divide....

[white marsh]

it looks like it has to be its own pass maybe

[fallen stag]

I'm having a new issue where my material is pink but I'm not sure why. I tried looking it up but the results didn't help me.

[white marsh]

there we go, i found some more updated documentation for it and that was all i needed to get it right

[meager pelican]

Shadow casting? Yes, it is its own pass. Shadow receiving is built into the main pass IIRC, or it is spatted on afterwards. May vary in forward vs deferred.

Try walking through that catlike coding tut, might help ya. 🙂

[rocky pond]

Hello, would anyone know why a shader in vr its good on the left eye but on the right eye its not where its supposed to be?

[white marsh]

you need to enable rendering on both eyes on the shader, i dont recall what its called rn but give me a moment and ill find it

[rocky pond]

Thanks, tho its getting rendered on both eyes its just not where it supposed to be on the right eye

[white marsh]

do you already have

UNITY_VERTEX_INPUT_INSTANCE_ID inside appdata, UNITY_VERTEX_OUTPUT_STEREO inside v2f and UNITY_SETUP_INSTANCE_ID(v); UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o); inside the vert function?

if so then i imagine its something with vertex displacement that isnt matching with both renders

[meager pelican]

stereoscopic rendering. And there's two types...
Single pass MRT (multiple render targets) where it computes each eye in the same pass and writes to two output buffers, then there's the pass-it-twice method when MRT isn't supported.

[rocky pond]

ima give it a try with this, I thought there was maybe a uv problem so I used ComputeGrabScreenPos to do it but that failed to

[meager pelican]

cool beans

[rocky pond]

hmm didn't really work I tryed multiple stuff

[wanton grove]

Can a compute shader keep track of RWTexture3D data between kernel functions?

And if so why do I have to set it for each kernel versus just the shader

whereas I can set it per shader with things like ints and floats

[meager pelican]

It probably has something to do with resource binding and/or how the engine deals with such. But it can retain data.

It can even retain data between frames.

[wanton grove]

I'm having a lot of trouble with my chunk rendering code, I'm trying to make terraforming for the chunks but it seems to only apply in "arbitrary" cases such as when the full mesh hasn't finished generating or the chunk is far away enough from the player.

If I try to apply the terraforms as the chunk is generating for the first time it works but if I try 5 seconds after it won't.

[wanton grove]

I think I figured it out for anybody having a similar issue. Make sure you UPDATE your RWTextures using the ComputeShader.SetTexture() every time you dispatch the compute shader, for some reason this seemed to be the only way to account for changes to the texture.

[cosmic prairie]

you are probably using a different render pipeline to what the shader supports

try a different shader

[cosmic prairie]

also, you can't import shaders from blender, but you should absolutely not use procedural materials in Unity or any game engine, try baking the texture you get from the material in blender

[marble plover]

hey did someone tell me where is the "alpha" section on the Fragement shader ? i see a tutorial and the guy link his shader to an alpha at the end and i have nothing like that ?

or maybe it is call something else

[grizzled bolt]

It shows up only if you enable alpha clipping or make the shader type transparent in graph settings in the modern UI

[marble plover]

i see, where is the graph setting ?

[grizzled bolt]

Can you find the graph settings tab?

[marble plover]

this ?

[ornate skiff]

is there a way to cut out / remove areas of a texture after you sample it in shader graph?

[rancid silo]

I think No

But idk

[ornate skiff]

i can make the black transparent but that leaves the texture as big as the original

[grizzled bolt]

You can also move and resize textures using Tiling And Offset
But usually it's better to add the cropping and transparency in an image editor so it doesn't have to be done at runtime

[ornate skiff]

yh but i'm generating the image in shadergraph.. so i guess i would need to use 2 shaders, one to generate the image and then another that can get that image and tile / offset the result of the first?

[delicate bison]

guys I just import some assets

and due to the memory loads
I plan to remove supporting component for the shaders
I might only need the Albedo

now I remove all the supporting textures for a single shaders

but is there any chance to do such thing at a batch ?

since I have a lot of material on the scene (can I not do this one by one) ?

[grizzled bolt]

You can multi-edit all materials that use the same shader

[delicate bison]

yeah but each object using different shaders : )

[grizzled bolt]

Your next option is probably making an editor script that can loop through materials and set properties by reference, if there's a matching reference
Sounds like a lot of shaders to have 🤔

[delicate bison]

or stupid method, what if just delete all unncessary texture from the explorer ?

[grizzled bolt]

Sure, worth a try

[white marsh]

im working on this toon shader and i want to use antialiasing between the shades. i as you can se i have some on the specular and highlight. but i dont have it on the shading. this is the code im using.

float3 N = normalize(i.worldNormal);
float3 V = normalize(_WorldSpaceCameraPos - i.wPos );
float3 H = normalize(_WorldSpaceLightPos0.xyz + V);
                
// Toon Blinn-Phong
float shadow = SHADOW_ATTENUATION(i);
float NdotL = max(0.0, dot(normalize(i.worldNormal), normalize(_WorldSpaceLightPos0.xyz)));
float4 light = floor((NdotL * shadow)/_Detail) * _LightColor0;

float4 BlinnToon = (light + _AmbientColor) *_LightIntensity + _Brightness;

also extra question. idk if this is lambert, Blinn or Blinn-Phong lighting. i got a little unsure as i saw two things saying different things

it would also be great if i could increase the antialiasing between the outline and the rest of the model. which is made by rendering it again behind but bigger

[grand jolt]

Can someone Give me a link to the overview of how to make functioning materials (ie bump maps, emission maps, normal maps, ect)?

[floral imp]

hello!

why can i not see pbr shader graph here

[grizzled bolt]

what unity version and render pipeline are you using?

[grand jolt]

Hey does anyone know how to change the standard rp shader to an spr shader graph? I have a shader that only works in the standard rp but in Hdrp is pink and I cant have it be just a lit shader because it is a shader for an ocean

@ me if you need my shader scripts or you can help

[dim yoke]

is it surface shader or vertex/fragment shader?

btw, automatic conversion doesn't exist, you have to recreate the shader in shader graph yourself (you can use custom function node to put some of the shader code there)

seeing the shader code could help

[grand jolt]

its a Fast Fourier transform ocean shader and i hav no idea how I would be able to recreate it in shader graph

[dim yoke]

that sounds like loops and stuff (shader graph doesn't support loops). most likely most of the shader code can be put in custom function node

[grand jolt]

this is the shader

[dim yoke]

huh... that's quite complicated

@grand jolt how much experience do you have with (surface) shaders?

fun fact, unity is currently working on hdrp/urp surface shaders so in future that shader would work straight away or with very small changes in hdrp too

[grand jolt]

Not a lot, I have very basic knowledge of shaders this ocean shader was not made by me

[dim yoke]

ok so first you could create all of these properties with their initial values and stuff

[balmy thicket]

Hey! I've made a shadergraph for a portal, the game it's in is a hand animated one with a relatively low framerate. Is there any way to reduce the update ferquency of the shader time to something like 1/10th of a second?

[dim yoke]

no, it's not possible. everything is rendered once every frame, you can't render certain objects only once in a while

[cosmic prairie]

you can animate it that way tho

soo the desired effect is possibble

[balmy thicket]

Ah, you mean update the shader time value with script?

[dim yoke]

but they don't talk about effect. that won't make performance any better

[balmy thicket]

It is purely aesthetic reasons

[cosmic prairie]

all you have to do in the shader, is where you pass time in, multiply the time by 10, round it up, then divide it by 10

[dim yoke]

ah, then I misundestood. I thought you meant you want to save some computations because you talked about framerate and stuff

[cosmic prairie]

and then use that value you get for the time

[dim yoke]

you can do that in the shader too

[balmy thicket]

Ah clever

[cosmic prairie]

I guess both shader and script would work, whichever is easier for you to implement

[balmy thicket]

Shader seems more streamlined

[cosmic prairie]

yea.. script on the other hand would be better on the performance, but at this scale I doubt it would be a problem

[west lantern]

Hello, does anyone know a tutorial to learn shaders in Unity

?

[balmy thicket]

Ah, didn't know that actually

I just assumed that it had an overhead

[dim yoke]

there are lot of learning resources pinned on this channel

[west lantern]

Thank you

[dim yoke]

most likely the overhead of doing that is very negligible compared to the rest of the shader but of course it still requires some extra calculations for each rendered pixel (doing that in C# script on the other hand would make it so the value needs to be calculated only once per frame and not for every pixel separately)

[cosmic prairie]

If performance becomes a problem, you should keep any pre-computation on the cpu if you can, and try to reduce the amount of operations you do on the gpu. It's also worth to look at which type of operations need a lot of execution time. For example "pow" is really expensive, but sometimes you have to use it

[dim yoke]

I wouldn't say "really expensive". some even use procedural patterns like Simple Noise Node which uses something like 6 pows and 12 sines 😅. I'm really surprised if Simple Noise Node can be good choise for mobile platforms for example (on vertex stage that's not that bad tho assuming vertex count is relatively low)

[cosmic prairie]

I guess for small effects, like magic projectiles it would be fine (even tho most people probably use it for something stupid like water 😵‍💫 )

But yea, it's not that hard to get a seamless repeating noise texture

[white marsh]

Everything you possibly want to know about starting to learn how to do stuff is in here. https://docs.unity3d.com/Manual/SL-VertexFragmentShaderExamples.html

If you want something more entertaining to work on than just this i would recommend trying this video series on YouTube:
https://youtu.be/kfM-yu0iQBk

Freya holmer is great to get started but doesn't explain everything like in that unity documentation

[dim yoke]

And then they use multiple of them to get nice looking water 😯. There’s free seamless noise texture generators online so I don’t really see a reason to use those nodes (apart from vertex stage shaders)

[grizzled bolt]

I think there are ways to sample textures in the vertex stage
Is there a reason not to?

[balmy thicket]

Ah, see that my preconceptions about performance were totally wrong. Thought textures took long and noise was fast 😅

[balmy thicket]

Why should it be particularly bad to use it for water?

[cosmic prairie]

Water is usually rendered on the whole screen = more noise pixels to render

Also, just simplex noise for water isn't even that realistic

[dim yoke]

Sampling texture just takes values from a table of colors (its similiar to getting value from color array). Noise functions needs to calculate the colors runtime

[dim yoke]

Only SampleTextureLOD works on vertex stage. There’s no problem sampling texture on vertex stage but I just meant using procedural noise functions in vertex stage is usually pretty fine in terms of performance because vertex count is usually relatively low compared to fragment count.

[grizzled bolt]

Right!

[balmy thicket]

Yeah makes sense that price is shadercomplexity X pixels

[dim yoke]

Gpus are weird sometimes but that’s roughly how it works. On vertex stage the overhead is complexity X amount of vertices on the mesh

[grand jolt]

how do we fix this?

is there a plugin for shaders?

what do you recommend?

[meager pelican]

Generally, you're correct. A texture read is "more expensive" overall than some math (YMMV on the math part, depends on how complicated). But GPU is built to read textures and apply them, so samplers are allocated, texture reads are started, other stuff is done if possible (the optimizer will even move the texture reads up as high as it can in the processing order) and then there's latency hiding that allocates many of these processes and stacks them, and waits for memory to be read/sampled from the texture memory, and then comes back later when the data is ready.

So with all that going on, we're back to "how fast is fast enough?"

[balmy thicket]

Yeah, I try not to worry about performance before I need to, but it's still healthy to be aware of good practices

[grand jolt]

Does anyone use any plugins for unity shader files?

b/c intellisense doesnt work on .shader file

what do you guys use. please tell me.

[lean lotus]

Is there a way to send a structuredbuffer with an array in it to a GPU to a compute shader

[grand jolt]

there is only one. the HLSL tool plugin (not reply to pjbomb2)

[umbral panther]

Is there a way to render a mesh renderer in the UGUI.Rendering.RenderOverlays render phase or to set up a camera to render after that? I want to render a 3d mesh atop a canvas without using another render texture and can't switch the canvas to Screen Space - Camera because the camera is in a different scene from the canvas. I'm sorry if this is the wrong channel, there didn't seem to be a more obvious location for general rendering questions

[meager pelican]

"with an array in it"? Vague but OK. You can either

1. send in a fixed-length array as part of the buffer's structure
2. use a two-buffer approach, and put a starting index + length into your first buffer's structure and then add all the various # of array elements to the 2nd buffer.

IIRC the array has to be of a blittable type. See https://docs.microsoft.com/en-us/dotnet/framework/interop/blittable-and-non-blittable-types

[wary jackal]

Does anybody know why I might be getting these artifacts in my screen distortion shader? I'm really not sure why these are here.

{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
        _Amplitude ("Amplitude", Range(0, 1)) = .5
        _Frequency ("Frequency", Range(0, 100)) = .5
        _Speed ("Speed", Range(0, 100)) = 1
    }
    SubShader
    {
        // No culling or depth
        Cull Off ZWrite Off ZTest Always

        Pass
        {
            CGPROGRAM
            #pragma vertex vert_img
            #pragma fragment frag

            #include "UnityCG.cginc"

            sampler2D _MainTex;
            float _Amplitude;
            float _Frequency;
            float _Speed;
 
            fixed4 frag (v2f_img i) : SV_Target
            {
                int speed = round(_Speed);

                float xOffset = cos(i.uv.x * _Time[speed] * _Frequency) * _Amplitude;
                float yOffset = sin(i.uv.x * _Time[speed] * _Frequency) * _Amplitude;

                i.uv.x += xOffset;
                i.uv.y += yOffset;

                fixed4 c = tex2D(_MainTex, i.uv);
                return c;
            }
            ENDCG
        }
    }
}

[sweet cosmos]

Not native speaker. Reading about graphics and often meeting word "fidelity". What does it mean in graphics context? Example: "If the GPU on the device running your Project does not support the rendering path that you have selected, Unity automatically uses a lower fidelity rendering path. For example, on a GPU that does not handle Deferred Shading, Unity uses Forward Rendering."

[royal crest]

Hi guys, Iim tryting to figure out how to flip a result in the shader graph, does anyone know perhaps? I've tried the flip node but it turns the whole thing black, I also tried rotate to see if this could help but it just changes the colors and doesn't do anything else... I've tried to look it up on the internet but most people script their shaders 😅

[little marlin]

did you mean one minus node ? you want to turn white values into black and black into white ? if so, then one minus is the node you are looking for.

[royal crest]

No I meant like having it flipped, the white part should be mirrored if you want. I'm trying to create a seamless noise that I can animate for an effect i'm working on.

[meager pelican]

IDK, but "_Time[speed]" looks suspicious to me. _Time is a float4 and you've got the _Speed property ranging from 0 to 100. Still, whatever it is returning should be in the 0 to 1 range due to sin and cos. Did you want to scale _Time like "_Time.y * speed"?

Maybe check sampler state settings too.

[hushed basin]

https://www.youtube.com/watch?v=a5PbtUoHyQo&list=PLgCzUN8NgXu2Gb23_wiHyBWesCRL3PkXg&index=45&t=450s&ab_channel=WuzzyWizard
i follow this to 7:30

why my shader become a line like that?

[grizzled bolt]

@hushed basin make sure your texture is set to repeat, not clamp in import settings

[hushed basin]

dam, that is the trouble, thank you so much ❤️

[grizzled bolt]

Try Tiling and Offset node with a tiling of -1

[latent thistle]

anyone can help me; i'm trying to do a gradient on 3d object from the base to the top any idea?

[dim yoke]

I think it's pretty similiar to "accuracy" or "quality". In terms of rendering path fidelity goes Deferred > Forward > Vertex Lit. With rendering paths the fidelity means how big portion of lights are calculated per pixel and does the rendering path support realtime shadows etc. Instead of calculating lights for every pixel lights can be calculated on vertex shader and then interpolated to fragment stage (Vertex Lit uses only per vertex lights)

[sweet cosmos]

Thanks

[dim yoke]

np. do you need more information about the rendering paths in general or did you only want to know what "fidelity" means?

[sweet cosmos]

I'm trying to figure out how graphics work in unity and how to use command buffers. So yeah I need more info. I don't understand what you mean by how many of lights are calculated per pixel tho